Machine for making tooth-pin anchors.



J. DIMELOW.

MACHINE FOR MAKING TOOTH PIN ANGEORS.

APPLIOATION FILED SEPT. 7. 1907.

Patented Oct. 3, 1911.

6 SHEETS-SHEET 1.

J. DIMELOW.

MACHINE FOR MAKING TOOTH PIN ANGHOBS.

APPLICATION IKLED SEPT. 7, 1907.

Patented Oct. 3, 1911.

6 SHEETS-SHEET 2,

J. DIMELOW.

MACHINE FOR MAKING TOOTH PIN ANGHORS.

APPLIUATIOIT FILEDBEPT. 1, 1907.

1,005,006, Patented 001;. 3, 1911.

6 SHEETS-SHEET 3.

J. 11111131 0 11 MACHINE FOR MAKING TOOTH PIN ANOHOBS.

APPLICATION FILED SEPT, 7, 1907.

1,005,006. Patented 0013,1911.

6 SHEETS-SHEET 4.

UNITED STATES PATENT OFFICE.

JAMES DIEMELOW, 0F YbRK, PENNSYLVANIA, ABSIGNOR TO DENTIB'IS PANY, OF YORK, PENNSYLVANIA, A GORPORATION OF NEW YORK. MAOHIiN'E FOR MAKING TOOTH-PIN ANCHORS.

' Specification of Letters Patent.

Patented Oct. 3, 1911.

Application filed September 7, 1907. Serial No. 391,806.

To all whom it may concern: 4 Be it known that I, Jipms Dlrm ow, a citizen of the United States, residing at -Yo'rk, in the county of York and State of Pennsylvania, and useful Improvements in Machlnes for Making Tooth-Pin Anchors, of which the following is a specification.

This invention relates to metal-bend1ng machinery and has particular reference to mechanism for working platinum supplied to the machine in the form of an exceedingly thin and narrow strip, to produce therefrom small tubes suitable for use as the pin anchorsof artificial teeth.

Owing to the great cost of platinum, the present value being greater than that of gold, it is desirable to compensate as far as possible for this high cost of material by economy in cost of producing the tooth anchors.

The principal object ofthis in ent on therefore ,is the production of a machinewhieh will rapidly convert a strip of thin platinum into conipletely-formed anchors read.) for insertion 111 the molds which are used in the. V and crowns. The anchors produced by tl 1s machine are tubularinform, and may :pr may not have a [hinged em.

Incidental to the principal object mentioned, are other objects, such as will here,

iuafter appear, of durability, and rzi s )ite of the fact that some of the parts of the mechanism are exceedingly delicate.

My invention, broadly stated, consists of a. machine com arising means for intermittently fecdin the strip of metal, means for adgnstability, simplicity, pi

cutting oli' short lengths of the strip, and

means for bending or folding the pieces sueccsairely around. a mandrel.

' Mv invention further consists in various details of construction all as will he more fully explained hereinafter and then pointed out both broadly and specifically in the ap-i pe ulcd claims.

()f the accompanying drawings. :-Figure 1 IS a plan View 6f the machine, drawn nearly full size. Fig. 2 is an elevation from the left. Fig. 3 is a; front elevation. Fig. 4 is a rear elevation of the" machine. Fig. 5 is'a view similar to Fig; 2, but partly in section. Fig. 6 is a detail front elevation, on an enlarged scale,'of the bending jaws and have invented certain new 7 manufacture of porcelain te h.

. ing end of the ity of operation, in

cotiperating arts. Fig. 7 is a .detail' view from the rig t of Fig. 6, artly in section, and some 0 the details of Fig. 6 omitted. Fi 8 is a detail plan view of the feed slide. 'JIQig. 9 is' a detail elevation of the ,cutter-operat-in mechanism. Figs. 10 and 11 are respectively, an elevation and an edge view, of the cams which actuate the presser or hammer and the mandrel. Fig. 12 is a detail elevation, partly in section, of the feeding mechanism. Fi 13 is an elevation from the right of Fig. 12. Fig. 14

Similar reference characters indicate the same or similar parts in all the views.

The frame of the bed 30 supported on suitable legs 31 and having an upright or face plate 32, the latter having bearings-33 for-the main or cam shaft 34, the latter having a driving wheel 35'adapted to ,eceive a belt from any suitable source. ofgiower.

l'ltlll and operation of the machine, I-Will promise the detailed description by explaining that the strip of platinum is advanced slightlv toward the right (see Figs. 3, 6 and 8) witi its end projecting from theti or nozzle 6 of the feed mechanism, the )ro eet strip is lifted slightly by thecutter above the plane of the mandrel then advances, the. cutter then descends without having severed the-strip but having only deflected the end of it over .the inantire], the feed then completes its advance} t to binds the strip onthe upper, side (if-the ,nlandrcl, the cutter then rises higherthan before with its side a ainst the face of the acts once or twice again, a has. been wrapped around themandi'el, with a greatcror unyielding pressure... to flange SUPPLY COM- is a sectional view of the feed mechanism.

a! while the latter is retracted, the mandrel presser or elainple -then' descends and feed tip or nozzle ant cuts olf the piece to er the cut pier machine comprises a- To aid an understanding of the construc;

Fig. 2) yieldingly taps of the invention illustratedfithe said tapprr 1 the outer end of the tube, as will be more fully described Wereina fter. After the parts have acted as described and the clamp and jaws and mandrel have receded to release the formed tube, a blast of air from the nozzlt 'h (dotted lines in Fig.3) blows the tube or complete anchor into, a suitabiereceptacle (not shown) this being a desirable feature because the tubes are so li ht and small (10 or 11 weighing but a graini that they would be otherwise liable to StlCt and be injured by the formation of the succeeding ones.

Refe'rrin chiefly to Figs.- -3 and 5, a bracket 36 1s formed with ways 37 for the feed slide 38 having its outer endpivotally.

connected at 39 with the lower end of alever 40. pivotall su ported at 41 and having its upper en 42 ocated to acted upon by a cam 43 at the left han mid of the main shaft, said cambein formed with two el vations the first of which advances the slide for' the positioning movement of the strip while the second completes the feed. The return movemient oi the feed is efiected by a spring 44 (Figs. 2 and 4) secured at one end to the bed of the machine and having its free end. passed througha hole in the outer end of the slide. the outward or return movement of the slide so as to vary the len h of feed for different sizes (diametrica-l y of the tubular anchors, a pin 45 (Fig. 12 projects downward from the slide into as at in the bracket I and of thefeed s i 30. An ad'ustable sto comprising a screw 46 is fitted in said brac et, its inner end c nslitnting an abutment for the pin -45 consequently limitin the outward mo. ment of the slide. 0 hold the stop scri lw inits ad'usted osition, a binding screw 7 is provi ed (s Fig. 3). This adjustable sto 146' affects, of course, only the amount of movement imparted by the first step of. the ram 43, the final or second advance of the slide being uniform. unless a change-of canis is made) because it is. controlled by the difference in height offlthe two elevations of the cam.

The strip of platinum is iisually led from a coil mounted on a auitablesupportand passes first along a guide groove 48 (Fig. 2) formed. in the u or surface of the outer c, then along the top of the slide under a sectionalcover 49 carried by, the slide to and through the tip 6. A po'rtidnof the cover comprises a thin section- 5Q :hinged, at. 51. so it may be conveniently turned .uptofacilitate insertion of the strip.

(1 rifii'thestrip to cause'it to advance with t e slide, .a four motion presser is employed (see Figs. 3 and 12), said resser 'nger 52- carried at t e end ivoted at54 (Figs. 1 and 4) to the ed 30. lie spring arm is formed t9 have a normal tendency to hold the finger '52 raised from the strip and its. forward end To adjustably limit o t sickness.

-=bushing is held to rise and fall between guides be rising from the feed slide. Sa d ides cause the arm to swing so that the ger must move laterally with the slide. Preferably a spring 56 is connected to the arm 53 t0 holdit against the left hand guide 55. To depress the arm and fin er, a cam 57 on the main shaft acts on a s id'e 58 (Fig. 3) mounted in a guide in the face plate. The finger 52 and t which takes hold of the strip a and advances its end to position to be cut as and bent or wrapped around the mandrel.

Acting alternately with the four-motion presser .or finger 52, is a clam which holds the strip while the feed sli e is receding. This clamp" comprises two members, the lower oneof which (Figs. 3 and 12) consists of a pin or base member 59 removably mounted in a screw 590 which secures the bracket 75 to the bracket 36, said in rising through the bracket 36 and throug an'elongated opening or slot in the feed slide. ,The pin 59 can be replaced by a new one when worn, by temporarily removing the screw 590. The upper member of the clamp consists of a shoe 60 adjustably secured to the free end of a 5 ring arm 61 rigidly secured to the bed 30 1 and 4) said arm havmg a normal cncy to hold the shoe 60 elevated. To cam 62 on the main shaft (Fig. 3) acts on a slide 63 mounted in a guide in the face I plate.

The cams 57 and' 62 act alternately to depress the'iour-motion fin er and the shoe which latter has no latera movement, and therefore the feed slide causes the strip to be advanced intermittently in the manner hereinbefore described.

The ti b of the feed'slide is preferably removab y secured by a screw 64 in an opening in the head 65 of the slide, so that it may be removed for cleaning or for being replaced by one having, a different size of ning fora strip 0 different width or The mandrel d (see Figs. 6 and '1) comrises asmall steeLrod slidably inounted in a bushing 66 secured in the face plate of the machine, said bushing being movable to enable another one, havin a mandrel of a (liflerent. size, to be substituted therefor. The rear end of the mandrel is secured to a holder havinga suitable s ring 67 (see dotted lines Fig.4) which isa apted to normally hold the mandrel with its front end substantially flush with the face of the the proper times b 'a leverflS i 1, 2, 4 and-"5), ivoted it 69 and actuate d cam 70.1 e upperend of the lever 68 is rovidedavitli. an adjustable shoe or bearmg piece 7 1 riding on the cam, whereby the distance to which the mandrel is projected e slide 38 constitutes the two cob crating members of a gripping device depress the arm and shoe, a'

66. j The mandrel isprp ject'ed at Its bya'

may be varied to accord with the width of the stri of platinum that is being worked.

Just before the mandrel is projected, the cutter c is given its first elevation to lift the projecting end of the stri a so that the feed will advance said end 'a ove the mandrel. Said cutter is adjustably secured to a slide 72 by a plate 73 and .clamp screw 74 (Figs. 6 and 7), said slide being mounted'in vertical ways carried by a bracket 75. The slide is provided with a lug 76 engaged by a,

- 78 havin end ofthe slide is s 1111 77 which bears on the. lug to de ress tie side and cutter. The cutter sli e is elevated at the proper times by a cam-ac tuated slide 78 (Fig. 3) mounted in wags in the face plate, the lower end of the sli e an adjusting screw 79 .bearing against t e bottom of the butter slide 72, said screw enablin the height to which the cutter shall rise to is accurately determined.

The upper end of the slide is formed with an arm 80 extending over the top of cam 81. (Fig. 4), said arm havin a lug 82 extending down behind one of e bearings 33 to aid in guiding the slide in its vertical movements. The can; 81 is formed with two rises, the first somewhat less than the second, so that the first lift will cause the knife to deflect the free end of theplatinum strip just above the plane of the mandrel as has been described, while tne second one will cause the knife to rise hi her and sever the piece to be bent around t e mandrel as hereinafter described. After the cutter has deflected the strip as mentioned, the mam drel is projected and the strip is given its final advance over the mandrel, the cutter dro )S slightly, and the clamp 0 comes ddwij. an rips the strip against the top of th man rel. Said clamp comprises a steel strip havin a concave lower end adjustabl securedietween jaws 83 carried by a sli e 84 mounted in ways sup aorted by the jaw-' slide" hereinafter described (Fig. 6 in connection with Figs. 3 5 and 7).. The 11 per ormed with a. per oration which receives the end of a spring 85 secured to a bracket 86 mounted onthe rear of the bed 30. The sprin 86 extends under a cam 87 (see Fig. 1) w ich bears on said spring to depress it and the slide 84 and clamp e to ho d the strip a while it is bein cut and while the jaws present-1y describe bend the cut piece around the mandrel.

ing from the face plate. T

Beforedescrihin the jaws. andtheir operation, I will re er to the tapperwhieh prcsses'the strip back fully against the face of the mandrel. bushing. Bald ta'pper com-' prises a pin. adjustably secured to the end i of an arm88 of a rock-shaft S9 1,

rojectl 91 d b 9 tii ms a. 1n connecte y a spring 2 wi a fixed part of the machine, and has an arm 93 provided with a pin or roller which is 2, 8 and 5) mounted in bearings it to bend the out piece of held by said spring 92 against a cam disk 94 secured to t e main shaft within the periphery of belt-wheel 35. As best shown in Fig. 10, the cam disk 94 is provided with a spring-projected peripheral portion 95 which forms a cushion cam that acts yieldingly, or with a spring action, against the arm 93 of the rock-shaft so that the pressure of the tapper against the edge of the thin. strip of platinum will not be such as to bend it when ta wing it back to proper osition.

It will be observed that t edisk 94 illustrated is also provided with two rigid cams 96. These so actuate the rock shaft as to cause the tapper g to act as a hammer after the jaws have bent the strip a around the mandrel and while the clamp e and jaws f I, still hold the formed tube. The two blows (or it may be any other number according to the provision of a disk'94 with a difl'erent number of rigid cams) act on the outer end of the formed tube to flange it, this being a form of anchor much used. For this purpose the throw or advance of the mandrel will he a little less than thewidth of the strip a that is being worked, the diameter of the flange depending on the amount that the tube pro'ects beyond the end. of the mandrel. By an stituting for the disk 9-1, one that has no rigid cams, tubular anchors \having no end flange will be formed.

' The arm 88 .'s.carried by a hub or sleeve 97 secured to tlnerock shaft by a set screw 98 so that it can be adjusted properly, or be thrown outward and set so as to be out of .the way either when access is to be had to ,the jaws or parts adjacent thereto, or if it is desired that the tapper or hammer 9 shall not act at all.

The mechanism which actuates the jaws f, to cause them to descend on opposite sides of the mandrel and then close against the strip a into a tube, comprises a slide 100 (Fig. 3) mounted in a recess formed inthe face plate and normally pressed upward by a suitable spring, not shown. It is depressed by a ca-mdOl (Fig. 1) on the cam shaft. Said slide is provided with'ways for the clamp slide 86 before mentioned. Jaw levers 102 are pivoted at 103 to the slide 100 and are 104, and are formed with bosses whic1 are acted upon by cams 106, on the main shaft, the sprin 104 causing the lower ends .connected at theirupper ends by a spring of the levers w ich carry the jaws f, f, to

open and'the cams 106 causing them to close positively at the proper times. "The cams 101 and 106 are so timed, relativel that the jaws descend while open, then a ose on thepiece ofthe strip? held on the mandrel by 't e'clamp c, then open, and then rise.

In order that the jaws may be accurately" adjusted, 'or,when-- worn dr damaged, ma be replaced b'ynew ones, each lever 102 1s formed with a recess 107 (Fig. 6) in which the shank of the jaw f is clamped by a plate 108 and screw 109.; I

In order that the ti 5 of the jaws f, f, shall desce id close to t e sides of the mandrel to ro erly fold or clamp the ieces of metal, 't e two jaw-levers are rovi ed with vertical faces 110 which ride a ong the faces of guides 111 secured to the face plate of the machine by screws 112.

After the tube has been formed and the clam andjaws have been retracted and the man rel has receded, a blast of air supplied throu h a pipe 113 isF delivered by the nozzle h dotted lines in ished anchor into a suitable receptaole,- not shown.

The operation of, the machine as a whole having been described at the outs t, and the operation of thediflerent groups of mechanism having been stated in connection with the description of the details of constr'uction, further reference to the operation of the entire machine will be unnecessary.

Having now described my invention, what I claim is 1. In a machine ,of the character described, the combination with a mandrel, of

means for feeding a strip of metal within two-ste movement toward the mandrel, means or deflectin .the projectin end'of the strip to one si e of the inaiidi-el after the first-feed movement, a cutter for sovering the' strip after the second feed movement, and 'means for bonding the scvcrcd piece around the mandrel.

2. In a.machinc for making tooth pi anchors, the combination will] a ma n-h :l and bending jawscoiipci'ating therewith, pf strip feeding mechanism having a two-step advance movement, and a cutter having op crating mechanism whereby it. is first actuutcd to deflect the strip and then actuated to sever the strip.

5'. 111 a machine for making tooth -iin anchors, the combination with a mamrcl and bonding jaws coiiperat'ing therewith, of

. stri fcediii mechanism haviii 1 a two-stem and bending jaws eoliperating theicwith, of strip feeding mechanism having atwo-stcp.

advance movement, and a cutter having operating nicchauisn'i whereby it is first actuated to deflect the strip and thou actuated to sever the strip, .means bcing provided to clamp the strip to the mandrel before it is severed.

4. In a machine for making tooth iin auchors,'thc combination with a mamrcl advance movement, and a cutter having opcrating mechanism whereby itisli rst acluatcd to deflecl'ihe strip and thou actuated to sever the strip, said operating incchanisnr (amiprising a spring to actuate the cutter in one dirimtioii, a cam having two'riscs to actuate it ill the other direction, and a slide actupositioning ig. 3) to blow the fin-- t ated b said cam and operatively connected and a support therefor, of strip feedingmechanism, a tapper for positioning the strip relatively to the mandrel, a cutter for severing the strip, and means for bending the severed piece around the mandrel.

6. In a machine for making tooth in anchors, the combination with a man rel and a support therefor, of strip feeding mechanism, a yieldingly actuated ta per for e strip relativel to t e manrel, a putt for severing t e strip, apd means for bending the severed piece around the mandrel.

7.-In a machine for making tooth in anchors, the" combination with a man rel and a support therefor, of strip feeding mechanism, a tapper for positioning the strip relatively to the mandrel, a CllttBPfOl severing the strip, and means forbendin' the severed piece around the mandrel, sai tapper comprisin a rock-shafthaving two arms one of whic is providedwith a pin, and a cum to actuate the other arm of the rock-shaft.

8. In a machine for making tooth in anchors, the combination with a man rel and a support herefor, of strip feeding mechanism, a pper for positioning the strip relatively to the mandrel, a cutter for severing the strip, and means for ben'din the severed piece around the mandrel, sai topper comprising a rock-shaft havingtwo arms one of which is provided with a pin, and a yielding cam to actuate the other arm of the i'oclcshaft. a

9. In amachine for makingtooth in anchors, the combination with a mand reI and a support therefor,'of Strip feedin mechanism, a tap er to engage one edge 0 the strip, means f d unyielding blows to said tapper, a cutter for severing the strip, and means for bonding the severed strip around the mandrel.

10. In a machine for inakin'gtooth in anchors, the combination with-a man rel and a-suppol't therefor, of strip feeding mechanism. a tapper for'positioning the tho cvcrcd piccc around the mandrel, Salt t'appcr comprising a rock-sl-iaft having two arms one of which is provided with a pin, and a cam-disk provided with yielding and rigid arms to actuate the other arm offthe rock-shaft.

II. A machinefor making tooth pin' anchors com prising-a reciprocating mandrel,

means for feeding a strip of 'met-ril with a.

two-step advance movement, means fordeflecting the end of the strip to one side of the mandrel while the latter is. retracted,

r-imparting yielding and i means for Ipressing the stripback to proper position re atively to the mandrel, means for, clamping the end of the stri against the mandrel after it is projected means for severing the strip after the second step of its advance, jaws for bending the severed piece around the mandrel, and a blower for re moving the anchor after the jaws and clamp reeede.

12. A machine for making tooth pin anchors comprising a reciprocating mandrel, means for feeding a strip of metal with a two-step advance movement, means for de fleeting the end of the strip to one side of the mandrel while the latter is retracted, means for pressing the strip back to proper position relatively to the mandrel, means for clam 'ing the end of the strip against the man rel after it is projected, means for severing the strip after the second step of its advance, jaws for bending the severed piece around the mandrel, means for Hanging the said piece while it is held on the mandrel, and a blower for removing the anchor after the jaws and clamp recede.

In testimony whereof I aiiix my signature, in presence of two witnesses.

JAMES DIMELOW.

Witnesses:

JAS. D. FInLnY, EDWARD J. LOUOKS. 

